Metallic strap.



- Patented July 29, I902.

E. H. VUGEL. METALLIC STRAP.

(Application filed Mar. 17, 1902.)

(No Model.)

To all whom it may concern.-

ERNEST H. VOGEL, OFBROOKLYN, NEW .YORK.

METALLIC STRAP.-

srncrrrcnrron forming part of Letters Patent No. 705,626, dated July 29, 1902.

Application filed March 17,1902. Serial No. 98,655. (No model.)

Beitknown that I, ERNEST H.VoGEL, aciti: zen of the United States, residing in the city of New York, borough of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Metallic Straps, of which the following is a specification suificient to enable others skilled-in the art to which the invention appertains to make and use the same.

My invention relates to straps of metal used for binding and reinforcing the corners of' boxes, fastening on lids, securing bungs, and various other uses, and particularly to the class of straps in which the teeth by which the strap is designed to be held in place are formed directly from the body of the strap itself, being out and struck up into shape by suitable dies. As heretofore made, these teeth have been V or wedge shaped ingeneral outline and have afforded but an indifferent hold or purchase upon the wood, especiallywhen driven across the grain of the latter, so that any undue strain to which the parts might be subjected was apt to spring the strap and loosen it. t

The main object of my invention is to form a metallic strap with barbs that will positively lock and hold it in place; and the invention consists primarily in forming a metallic strap with split barbs, each half of which is formed with a point inclined away from that on the other half, so that when the split barb is driven into the wood the' halves will naturally be spread apart, clenching the wood, and form a positive connection therewith that will effectually resist withdrawal or displacement, as hereinafter more fully set forth.

A secondary feature of my invention con.- sists in forming the strap with my improved split barbs or clenching-teeth in combination with the older form of V or wedge shaped tooth, as hereinafter described and claimed specifically, the V-shaped teeth being employed to hold and steady the split barbs in position while they are being driven into the wood, aswell as for the purpose of increasing resistance to longitudinal strain in the strap.

In the accompanying drawings, Figures 1 and 2 are respectively iso1netricalviews of the upper and under side of my improved plane of line 6 6, Fig. 5.

metal strap. Fig. 3 is a plan of the blank afterthe first or central cuts or splits are formed; Fig. 4, a similar View after the formation of the V cuts. Fig. dis a top view of one end of the strap; Fig. 6., a transverse section upon viewof a piece of wood to which my improved strap hasbeenapplied, taken upon plane corresponding to 6 6, Fig. '5. metrical view'of the old form of strap.

. In manufacturing myimprovedsheet-metal strap S the blank is first formed with a series of straight cuts or splits a, which eventually constitute the central split in the barbs B. The V-shaped cuts o are next formed, the apex of each V uniting with the end of one of the central splits a, as shown in Fig. 4. The sides b b of the barbs B are then cut on the lines o c, Fig. 4, and both the barbs Band the V-teeth V bent or upset, preferably, though not necessarily, by one operation. It is to be understood that these several steps are pref-- erably executed by the use of suitable forms of dies, which it is not necessary to illustrate herein, such dies being'well-known mechanical expedients in the arts.

Eachtooth V and each barb. 13 is preferably arranged out of line or breaking joints laterally with the teeth and barbs adjoining, by which means I obviate the possibility of adjacent teeth or barbs entering the same grain of the wood, and thereby attain a more substantial hold or as a whole.

In driving the teeth V and barbs B intothe wood the teeth V penetrating straight into the fiber (and their wedge-shapeinsures this) act to steady and hold the split barbs in position and alinement and to counteract any tendency to lateral displacement by reason of the converging points of the barbs enpurchase upon the wood countering unequal resistance while entering the wood. The V-teeth also increase the resistance of the strap to longitudinal strain during use.

In Fig. 7 the result of forming barbs;B.with diverging points Z) l) is illustrated. The inclines naturally cause the points to spread apart, the wood fiber betweenthem acting as a wedge, and thus causing them to penetrate laterally more or less', but suiiiciently in any case to insure their retention by a process similar to that known as clenching.

Fig. 8 is an,iso-

Fig. 7 is a sectional enable the members I) b to separate freely to" the very base when driven into the wood.

An important advantage of my improved construction of strap is that it can be applied either with or against the grain, whereas the old form of strap (shown in Fig. 8 for com parison) won'ld not hold ifdriven across the grain.

What I claim as myinvention, and desire to secure by Letters Patent, is-

1. A strap of sheet metal formed with split barbs cut and stamped from the body of the strap, the halves of said split barbs having their adjacent sides parallel and in close proximity to each other at theirjnnetion with the body of the strap being formed with diverging points, substantially as and for the purpose described.

2. A strap of sheet metal form wi SP barbs and with V-teeth cut and stamp d 3 the body of the strap, the halves of th p t barbs being formed with diverging points, and the V-teeth being opposed to the herbs,

substantially as and for the purpose set forth.

3;. A strap of sheet metal formed with split barbs cut and stamped from the body of the strap, the halves of the said split barbs being formed with diverging points and the adjacent barbs being formed out of line with each other laterally to insure contact'with different portions of the grain of the wood substantially as set forth. a

'4. A strap of sheet metal formed with split barbs cut and stamped from the body of the strap, the halves of said split barbs being formed with diverging points, and the split between them extending into the body of the strap, substantially as and for the purpose described.

ERNEST I-I. VOGEL.

Witnesses:

D. W. GARDNER, F. E, ROACH. 

